秦岭山区地表起伏大，误差较黄土丘陵地区小，最大相对误差为17.8%。
In Qingling mountainous area, errors are relative small and the maximum relative error is 17.8%.
在中国西部地区，地表起伏剧烈，表层低速带横向速度变化较大，静校正问题严重。
Static correction problem is serious in areas of western China with acute topographic undulation and sharp lateral variations of LVZ velocity.
地貌学是研究整个地表形态或某一个地区地表起伏形态特征、成因、发育规律、分布和改造利用的科学。
Geomorphology is a science which aims at the characteristic, the cause, the evolution law, the distributing and utilization for the whole or part of earth surface.
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